Reply To: Merc-O-Tronic schooling please

[frankr]

The MOT appears to be nothing but an Ohmmeter with the dial markings modified. The same test can be done with a common analog multimeter. On a high Oms scale the needle will jump up as the condenser charges, and return to near infinity when fully charged. How close it returns to infinity is indicative of leakage. One important thing to remember–this is a hands-off test. If you are touching the condenser and wire (or the test leads) you will get a false reading because you are also reading the leakage through your body. This is called getting a shock, if the voltage were high enough (it’s not).